CN102003090A - Pool cleaning vehicle with improved logic system - Google Patents

Abstract

A pool cleaning vehicle includes a housing having a removable body shell, a frame and an interior. The housing is provided with a water outlet for exhausting air from the housing. The removable body shell is attached to a frame that includes a base. The cleaning machine includes a filtration system having a pump motor that pumps pool water to the filtration system. The pump creates a suction sufficient to allow the machine to climb the pool wall and emerge. The cleaning machine further comprises logic means for: first, triggering the movement of the cleaning machine, second, turning off the water pump, and third, restarting the water pump. Additionally, the logic device causes the water pump to operate at a first speed; when the cleaner reaches a predetermined distance from the water surface, the water pump is turned off. After the water pump is shut down for a predetermined time, operation is resumed.

Description

Logic Systems Improved Pool Cleaner

Related Patent Applications

This patent application is related to its applicant's three remaining US patent applications, which are hereby incorporated by reference. Three US patent applications have application numbers 12/551,211, 12/551,185 and 12/551,127.

technical field

The invention relates to the field of pool cleaning equipment, in particular to a pool cleaning machine with an improved logic system. More particularly, the present invention relates to those pool cleaning machines that climb walls and use their propulsion to emerge from the water.

Background technique

As described in earlier patents, particularly US Pat. No. 6,099,658 to Porat, it becomes increasingly important to complete pool cleaning as quickly as possible. Efficiency is the most pursued goal in this industry. In the past, pool cleaners that were able to climb walls tended to take longer to climb walls, especially when going down, to prevent the cleaner from becoming unstable.

Above-mentioned Porat discloses a kind of cleaning machine, it can maintain constant speed or initial speed on the way of climbing wall;

It was thought that to avoid the cleaning machine becoming unstable as it climbed down, it needed a slower speed. But with typical pool cleaning equipment, this may not be effective, because it will only end up slowing down the progress of cleaning the pool. So, ironically, what Porat has been trying to solve is the timeliness of cleaning the pool, and is more or less adversely affected by this proposed solution.

Porat explained that the instability of the cleaning equipment takes more time than simply slowing down the cleaning equipment. For example, when a cleaning device is tipped over, ie the device is hanging upside down as shown in Figure 2 (Prior Art), with the top cover down; obviously this will take more time than simply slowing down the device's climb down.

FIG. 2 shows a pool cleaning device 10 climbing a pool wall 20 . When the device 10 is above the surface 30 of the water, air will enter the device. It is well known in the pool cleaning technology community that in order to effectively clean a pool, pool cleaning equipment requires a near-neutral buoyancy force. However, when air enters the housing 40 of the device 10, it is easy to destabilize the required buoyancy, causing the device 10 to fall off the wall, fall upside down in the water or topple over. When the device 10 is overturned, the user manually turns the device over and restarts the device.

As noted above, the Porat patent discloses that a two-speed motor slows down the machine 10 as it climbs down. Porat's cleaning device housing has a vent that allows excess air to escape as the device climbs down to prevent the device from becoming unstable. Porat hopes that the combination of vents and slow speed will prevent the equipment from being unstable and clean the pool more effectively.

Another point worth noting is that Porat's cleaning equipment must use a two-speed motor to achieve the above purpose.

As mentioned above, there is a direct conflict between the stated requirement to "slow down the cleaning equipment" and "clean the pool surface as thoroughly as possible as quickly as possible." We need pool cleaning equipment whose structure and logic system can reduce the possibility of equipment instability, and at the same time can clean the pool surface as quickly as possible.

Contents of the invention

The object of the present invention is to overcome the problems of the prior art and provide a pool cleaning machine with a new logic system.

The logic system cleaning machine can climb the pool wall stably, and restart the motor after a short period of time, guiding the cleaning machine to quickly and steadily return to the bottom of the pool, so reciprocating, so that the cleaning machine can quickly and effectively move along the surface of the pool (including pool wall) to move to clean the pool. Moreover, when the cleaning machine climbs the pool wall and emerges from the water, the air entering the shell of the cleaning machine can be released to avoid instability.

According to the pool cleaning machine of the present invention, there is a driving device that moves the cleaning machine on the surface of the pool, and its structure is consistent with the above-mentioned purpose of the invention and the purpose of the invention that will be mentioned below, including:

a housing, including:

A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet;

a filtration system having a pump motor for pumping pool water to the filtration system; the pump motor is capable of generating a suction force sufficient to allow the cleaning machine to climb the pool wall;

a logic device for: firstly, triggering movement of the cleaning machine, secondly, shutting off the water pump, thirdly, restarting the water pump; and

The logic means runs the pump motor at a first speed; the logic means turns off the pump motor when the cleaning machine reaches a predetermined distance from the water surface; and the logic means turns the pump motor back on after the pump motor has been turned off for a predetermined time.

Those skilled in the art can understand that when the cleaning machine moves at the bottom of the pool, there are two forces that press the cleaning machine against the bottom to move, (1) is the relative buoyancy/sinking force, but this force should be very close to zero (2) When the water pump is activated, water will be sucked from the bottom of the cleaning machine, that is, the water pressure will be used to press the cleaning machine to the bottom direction of the cleaning machine. And the pressure that this water pump produces just makes cleaning machine can move upwards close to the wall when climbing the wall.

The cleaning machine can use a sensing device to judge the distance between the cleaning machine and the water surface, and the sensing device and the logic device are interconnected.

The drive and the water pump can use the same electric motor.

The cleaning machine of the present invention differs from previously disclosed pool cleaning apparatus in that it can be operated using a water pump with a single speed electric motor. In contrast, the Porat cleaning equipment mentioned above requires a two-speed motor. Thus, in one embodiment, the logic means resumes operation of the pump motor at the first speed after the pump motor has been turned off for a predetermined time.

Of course, in another embodiment, the cleaning machine of the present invention can also be equipped with a two-speed motor. This motor has a first speed and a faster second speed. The cleaning machine moves at a first speed in order to clean the pool surface, climb along the pool wall and even emerge from the water. The motor is then turned off briefly for a predetermined period of time, and the logic means will send a message to run the cleaning machine at the second speed. The second speed is the descending speed of the cleaning machine, which is faster than the first speed, that is, the speed of the cleaning machine climbing down towards the bottom of the pool is faster than the speed of climbing up along the wall of the pool.

In one embodiment, the cleaning machine of the present invention uses event-driven logic to sense whether the distance between the cleaning machine and the water surface reaches a target. In this embodiment, reaching the target distance from the water surface may cause the cleaner to emerge from the water. Examples of events include the cleaner hitting, not hitting the pool wall, or coming out of the water. When an event occurs, the logic device will take the motor to another stage.

For example, when the cleaning machine is moving toward the bottom of the pool at the second, faster speed, when the sensing device of the cleaning machine senses that the cleaning machine touches the bottom of the pool, the logic device will restore the cleaning machine to run at the first speed.

Specifically, the present invention provides such a pool cleaning machine:

A pool cleaning machine having a driving device for moving the cleaning machine along the surface of the pool; the cleaning machine includes a filter system having a pump motor for pumping pool water to the filter system, the pump The electric motor creates a suction force sufficient to allow the machine to climb the walls of the pool; the machine consists of:

a housing, including:

A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet;

a sensing device for determining when the cleaning machine is above water; and

An event-driven logic device is used to determine: first, when to activate the driving device; second, when the cleaning machine is out of the water; third, when the cleaning machine is out of the water, turn off the water pump and drive the motor; fourth, when the cleaning machine is out of the water. When the machine is immersed in water again, restart the water pump and drive the motor.

Those skilled in the art can understand that when the cleaning machine climbs up the wall, there is a chance that part or a large part of the body of the cleaning machine will float out of the water and inhale air. It can only slowly sink back into the water without power, so it is necessary to turn off the water pump and the driving wheels or crawlers. When the cleaning machine returns to the water, that is, there is no air in the entire body, restart the water pump to speed up cleaning. The machine is pressed to the bottom of the pool.

In another embodiment, the cleaning machine of the present invention employs time-driven logic. Based on past statistical data, we can predict how long it will take the cleaning machine to climb the wall at a known speed in a pool with a known wall height and size. Therefore, we can use the timing scheme to estimate the target distance at which the pump will be turned off, and the predicted number has a certain degree of accuracy. In this embodiment, the logic system of the cleaning machine includes a timing device.

For example, after the electric motor drives the cleaning machine to move along the surface of the pool at a first speed, the motor is turned off for a period of time; when the logic device restarts the motor to make the cleaning machine climb down the pool wall, the logic device will send a signal to the motor, so that The cleaning machine is operated at the second, faster speed for a predetermined time; after the predetermined time has elapsed, the logic means transmits a signal to resume operation of the cleaning machine at the first speed.

Specifically, the present invention provides such a pool cleaning machine:

A pool cleaning machine having drive means for moving the machine along the surface of the pool; the machine includes a filter system having a pump motor for pumping pool water to the filter system, the pump motor producing A suction force sufficient to allow the cleaning machine to climb up the pool wall; said cleaning machine consists of:

a housing, including:

A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet;

a sensing device for determining when the cleaning machine has climbed the pool wall; and

A time-driven logic device, when the cleaning machine starts to climb the pool wall, the logic device will turn off the water pump after a predetermined time, and restart the water pump in another predetermined time after the water pump is turned off.

In a further embodiment, the cleaning machine of the present invention can also use a combination of time and event-driven logic.

In one embodiment, the cleaning vehicle of the present invention includes a sensor for sensing contact of the cleaning vehicle with a wall of the pool; the cleaning vehicle includes logic means to perform the following steps:

activating the driving device of the cleaning machine to move the cleaning machine along the surface of the pool;

moving the cleaning machine until the sensor senses contact of the cleaning machine with the pool wall, or, timing the movement of the cleaning machine, and if the sensor does not sense the pool wall after a first predetermined period of time, the cleaning machine operates in reverse;

determining a second predetermined period of movement of the cleaning machine when the sensor senses the pool wall;

After the second predetermined period of time has elapsed, the drive device is turned off during a third predetermined period of time;

restarting the motor after a third predetermined period of time has elapsed; and

Repeat the above steps.

The first predetermined time period is 30 to 120 seconds. The second predetermined time period is 3 to 20 seconds. The third predetermined time period is 0.2 to 5 seconds.

In another embodiment, the vehicle of the present invention includes a first sensor for sensing contact of the vehicle with a wall of the pool; a second sensor for sensing the distance between the surface of the pool and the vehicle; and a third sensor , for sensing a predetermined travel distance of the cleaning machine; the cleaning machine includes logic means to perform the following steps:

activating the driving device of the cleaning machine to move the cleaning machine along the surface of the pool;

moving the cleaning machine until the first sensor senses contact between the cleaning machine and the wall of the pool; or, after the cleaning machine has run for a predetermined distance, reversing the running direction;

When the first sensor senses the pool wall, start the third sensor for sensing the running distance, so that the cleaning machine runs the second predetermined distance;

After the cleaning machine has walked the second predetermined distance, the driving device is turned off and the second sensor is activated to sense the distance between the cleaning machine and the water surface;

After the first sensor senses the predetermined distance between the cleaning machine and the water surface, restart the motor; or

restarting the motor after the motor has been off for a predetermined time; and

Repeat the above steps.

Usually, when the cleaning machine has walked the second predetermined distance, the driving device is turned off before the cleaning machine has surfaced to slow down or stop the upward rushing force of the cleaning machine; Closed, but due to inertia, the cleaning machine is still drifting, especially the buoyancy makes the cleaning machine go up slowly, when the cleaning machine is close to the water surface for a predetermined distance, the motor will be restarted; or, if the cleaning machine does not float, wait until The motor is also restarted after being off for a predetermined period of time.

The pool cleaning machine of the present invention can release air through the water outlet after the motor is turned off, so as to eliminate the influence of air on the stability of the cleaning machine.

Furthermore, the cleaning machine of the present invention may have a low center of gravity in order to avoid tipping or instability.

Compared with the prior art, the advantages of the pool cleaner of the present invention are:

1) The efficiency of cleaning the pool can be improved by using only a single-speed motor;

2) It is more stable, faster and safer when cleaning the pool wall, and it can clean the pool more efficiently than similar cleaning equipment in the past.

Description of drawings

Figure 1 shows an exemplary implementation of one of the logic systems used by the pool cleaning vehicle of the present invention.

Figure 2 shows a typical prior art pool cleaning machine of the type described in the "Background" section above.

Figure 3 shows an exemplary embodiment of a pool cleaning vehicle in accordance with the present invention performing normal cleaning operations.

Figure 4 shows an exemplary embodiment of a pool cleaning vehicle in accordance with the present invention emerging from the water.

Figure 5 shows another exemplary embodiment of a pool cleaning vehicle in free fall according to the present invention.

Detailed ways

In order to better illustrate the objects and benefits of the pool cleaning vehicle according to the present invention, a detailed description of the accompanying drawings is provided below. Since the following exemplary embodiments are provided for the understanding of those skilled in the art, the embodiments are illustrative only and do not limit the scope of the present invention.

Figure 1 illustrates a schematic diagram of the vehicle logic system which is a major part of the structure of the pool cleaning vehicle of the present invention.

Figure 2 shows a prior art pool cleaning device in contact with and out of the water, as described earlier in this document. As previously described, pool cleaners can become unstable; and an unstable situation can cause the cleaning equipment to tip over, with its bottom facing upwards. If the device overturns, it must rely on the user to make manual corrections. Clearly, interruptions, delays, or user intervention in the normal operation of cleaning a pool hinder the automation of the operation. Also, unless the unit is equipped with an automatic shutoff, a tipping of the cleaner could cause its motor to burn out and require replacement.

Figure 3 illustrates the normal operation of the pool cleaning vehicle in accordance with the present invention. The cleaning vehicle includes a drive (not shown) for moving it across the surface of the pool. The cleaning machine also includes a filtration system with a pump motor for drawing pool water through the filtration system (not shown). The pump creates a suction force strong enough to allow the cleaner to climb up the pool wall. In an exemplary embodiment, the driving device of the cleaning machine and the water pump use the same electric motor.

The pool cleaning vehicle 100 includes a housing 120 having a body shell 122 and a frame (not shown) to which the body shell 122 is removably attached. The frame includes a base (not shown). The body shell 122 is provided with a water outlet for draining pool water from the shell 120 .

In an exemplary embodiment, cleaning machine 100 includes both event logic and timing logic systems. As shown in FIGS. 1 , 3-5 , the logic system of the cleaning machine includes an instruction to activate the cleaning machine 100 . After the cleaning machine 100 is started, it will move forward along the first direction. As shown in Figure 3, the cleaner moves forward until it hits the pool wall.

The cleaning machine 100 includes a sensor, such as a mercury switch, to communicate that the cleaning machine has hit a wall. The cleaning machine also includes a timing device. Therefore, assuming the cleaning machine has been advancing for a first predetermined time without the sensor sensing a wall, the cleaning machine receives a signal to stop advancing and reverse direction of operation.

In an exemplary embodiment, the time for the cleaning machine to move in the first direction is generally preset to be 30 to 120 seconds. However, we will also determine the amount of delay based on the length and width of the pool and the operating speed of the cleaning machine.

Under normal conditions, the cleaner will touch the wall before it times out and reverses direction. When the cleaning machine touches the wall, the sensor will sense the wall climbing action of the cleaning machine and enter the next timing stage. In the phase of calculating the climbing time, the cleaner climbs the wall within a predetermined time.

In an exemplary embodiment, each time the cleaning machine climbs the wall, there are climbing sections of different lengths. Since the structure of each pool is different, and each cleaning cycle may start at a different position in the pool; therefore, the time for each cleaning machine to climb the wall is set randomly to achieve the best cleaning effect. Regardless of the structure of the pool or where the machine starts its cleaning cycle in the pool, as long as the cleaning pattern is more random, the entire pool is covered. Usually the climbing time period can be set at 3 to 20 seconds.

When climbing walls, the cleaning machine sometimes emerges from the water so that air enters the housing 120 . Therefore, the cleaning machine 100 needs a method and structure to release the air entering the housing.

In an exemplary embodiment, the logic system to which the cleaning machine 100 is connected includes a method of releasing air from the body housing 122 and stabilizing the cleaning machine 100 . After the climb segment times out, the pumps are turned off for a predetermined period of time. In an exemplary embodiment, the shut-off time of the water pump is 0.2 to 5 seconds.

While the water pump is off, the cleaning machine 100 will drift in the water. Under normal operation, the cleaner will float away from the wall when the pump is turned off. Also, the cleaning machine will drift down to the bottom of the pool. The speed and distance of drifting are determined according to the buoyancy of the cleaning machine. Under normal circumstances, the cleaner has a relatively neutral buoyancy and will drift down to the bottom of the pool at a slower speed. When the cleaning machine drifts, it may rotate due to the influence of buoyancy and gravity, depending on the initial drift position of the cleaning machine. The pump motor will shut off at random, and as soon as the cleaner touches the sides or bottom of the pool, it will reverse direction of operation. This method gives the pool cleaner more random run times, creating a better cleaning pattern.

After the predetermined time that the pump has been off has elapsed, the pump receives a signal to restart. The above pattern will continue to repeat until the cleaner completes the entire pool cleaning program according to the pool's master timer.

It is also possible for a logic system to be event driven, hitting or not hitting a wall is an example of an event. When an event occurs, such as the cleaner hits, misses a wall, or emerges from water, the motor is brought to another stage by this logic system.

For example, in one exemplary embodiment, the logic system triggers the cleaning machine to move; then when the cleaning machine hits a wall, sensors are activated to transmit information about the distance between the cleaning machine and the water surface. In an exemplary embodiment, the sensor also sends out information when the cleaning machine, or parts thereof, are above the water.

When the cleaning machine reaches a predetermined distance from the water surface, the motor of the cleaning machine is turned off, and the cleaning machine drifts on the water surface. When the sensor transmits information about the distance between the cleaning machine and the water surface, the logic system restarts the motor and moves the cleaning machine again.

In an exemplary embodiment, the motor moves the cleaning machine at the same speed as it was previously moving. This is an advantage of cleaners using only single speed motors. In other embodiments, the cleaning machine can also use a two-speed motor. The second speed of the two-speed motor is hereinafter referred to as the lowering speed, and this lowering speed will be faster than the original running speed.

Although the cleaner in the above embodiment has a two speed motor, it will be appreciated that this embodiment is still quite new in the pool cleaning art world. That's because previous revelations have been about this type of pool cleaning device with a two-speed motor; such machines can easily become unstable when air enters the housing. In order to release the air sucked in by coming out of the water, it was generally believed that the cleaning machine needs to release the air slowly, which leads to a slower descent and slows down the cleaning process. Overall, this worked because the machine didn't tip over as shown in Figure 2, but the process of cleaning the pool was slowed down by lowering it slower than normal. In addition, in the solutions disclosed in the prior art, both the pump motor and the driving motor of the pool cleaning machine need to maintain operation on the water surface for a considerable period of time before the cleaning machine can move laterally. This method makes the cleaning process slower.

In the above two embodiments of the present invention, the cleaning machine 100 of the former has a single-speed motor, which maintains a normal moving speed; while the latter embodiment has a two-speed motor, and the moving speed is increased. Of these, switching off the motor for a short period of time is the only concession to releasing the air in the housing and avoiding instability of the cleaning machine.

In order to achieve the above-mentioned object of the invention and consistent with the structure of the cleaning machine 100, the cleaning machine 100 has a relatively low center of gravity. For example, such a cleaning machine is disclosed in previous disclosures, such as US Patent Application Serial No. 12//100,414 and Serial No. 12//044,931, which are specifically incorporated herein by reference. Therefore, as mentioned above, in order to achieve the principle of using the cleaning machine 100 with a low center of gravity, the setting of the motor of the cleaning machine and even the additional ballast may be adjusted.

Although the above detailed description has described various exemplary embodiments of the pool cleaning vehicle according to the present invention; it should be understood that the above exemplary embodiments are only illustrative and not limiting of the present invention. In fact, there are many different variations on the air inlets and their positions on the cleaning machine that are applicable to the above-discussed embodiments; mentioned in the text. Accordingly, the invention itself is limited only by the claims set forth below.

Claims (17)

1. A pool cleaning machine, having a driving device that moves the cleaning machine on the pool surface, the pool cleaning machine comprising: a shell, including: A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet; A filtration system having a pump motor for pumping pool water into the filtration system; the pump motor is capable of generating a suction force sufficient to allow the cleaning machine to climb the pool wall; and the pump motor operates the drive to allow the cleaning Ability to climb the pool wall and emerge from the water; a logic device for: firstly, triggering movement of the cleaning machine, secondly, shutting off the water pump, thirdly, restarting the water pump; and The logic means runs the pump motor at a first speed; the logic means turns off the pump motor when the cleaning machine reaches a predetermined distance from the water surface; and the logic means turns the pump motor back on after the pump motor has been turned off for a predetermined time. 2. The pool cleaning vehicle of claim 1, wherein said vehicle includes a sensing device for determining the distance between the vehicle and the water surface, said sensing device and logic device being interconnected. 3. The pool cleaning vehicle of claim 1, wherein said vehicle has a low center of gravity to prevent tipping of the vehicle. 4. The pool cleaning vehicle of claim 1, wherein the drive means and water pump use the same electric motor. 5. The pool cleaning vehicle of claim 4, wherein said motor is a two-speed motor having a first speed and a second, faster speed, said logic device signaling to cause the vehicle to operate at a second speed after the motor is turned off. Two speed operation; said cleaning machine also includes sensing means, when it senses that the cleaning machine touches the bottom of the pool, the logic means will cause the cleaning machine to resume operation at the first speed. 6. The pool cleaning vehicle of claim 4, wherein said motor moves the vehicle along the surface of the pool at a first speed and shuts off; when said logic means reactivates the motor to cause the vehicle to climb down the pool wall, The logic device sends a signal to make the cleaning machine run at a faster descending speed for a predetermined time; after the predetermined time, the logic device sends a signal to make the cleaning machine resume running at the first speed. 7. A pool cleaning machine having a driving device for moving the cleaning machine along the surface of the pool; said cleaning machine includes a filter system having a pump motor for pumping pool water to the filter system, the The pump motor produces a suction force sufficient to allow the cleaning machine to climb the pool wall; the cleaning machine includes: a shell, including: A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet; a sensing device for determining when the cleaning machine is above water; and An event-driven logic device is used to determine: first, when to activate the driving device; second, when the cleaning machine is out of the water; third, when the cleaning machine is out of the water, turn off the water pump and drive the motor; fourth, when the cleaning machine is out of the water. When the machine is immersed in water again, restart the water pump and drive the motor. 8. A pool cleaning machine having drive means for moving the machine along the surface of the pool; said machine comprising a filter system having a pump motor for pumping pool water to the filter system, said pump The electric motor creates a suction force sufficient to allow the machine to climb the walls of the pool; the machine consists of: a shell, including: A fuselage shell and a frame, the fuselage shell is detachably connected to the frame; the frame includes a base, and the fuselage shell is provided with a water outlet; a sensing device for determining when the cleaning machine has climbed the pool wall; and A time-driven logic device, when the cleaning machine starts to climb the pool wall, the logic device will turn off the water pump after a predetermined time, and restart the water pump in another predetermined time after the water pump is turned off. 9. The pool cleaning vehicle of any one of claims 1, 7 or 8, wherein the vehicle releases air through the water outlet after the motor is turned off. 10. A pool cleaning machine having drive means for moving the machine along the surface of the pool; said machine comprising a filter system having a pump motor for pumping pool water to the filter system; said pump motor generating a suction force sufficient to cause the cleaning machine to climb the pool wall; said cleaning machine including a logic device comprising the steps of: activating the driving device of the cleaning machine to move the cleaning machine along the surface of the pool; moving the cleaning machine until the sensor senses contact of the cleaning machine with the pool wall, or, timing the movement of the cleaning machine, and if the sensor does not sense the pool wall after a first predetermined period of time, the cleaning machine operates in the opposite direction; determining a second predetermined period of movement of the cleaning machine when the sensor senses the pool wall; After the second predetermined period of time has elapsed, the drive device is turned off during a third predetermined period of time; restarting the motor after a third predetermined period of time has elapsed; and Repeat the above steps. 11. The pool cleaning vehicle of claim 10, wherein the first predetermined period of time is 30 to 120 seconds. 12. The pool cleaning vehicle of claim 10, wherein the second predetermined period of time is 3 to 20 seconds. 13. The pool cleaning vehicle of claim 10, wherein the third predetermined period of time is 0.2 to 5 seconds. 14. A pool cleaning machine having a drive for moving the machine along the surface of the pool; said machine comprising a first sensor for sensing contact of the machine with the pool wall; a second sensor for sensing contact between the pool surface and a distance between the cleaning machines; and a third sensor for sensing a predetermined travel distance of the cleaning machines; said cleaning machine includes a filter system having a pump motor for pumping pool water to the filter system; The water pump creates a suction force sufficient to cause the cleaning machine to climb the pool wall, and the pump motor acts as the motor for the drive means; the cleaning machine includes logic that performs the following steps: activating the driving device of the cleaning machine to move the cleaning machine along the surface of the pool; moving the vehicle until the first sensor senses contact of the vehicle with the pool wall; or After the cleaning machine runs for a predetermined distance, reverse the running direction; When the first sensor senses the pool wall, activate the third sensor to make the cleaning machine run the second predetermined distance; After the cleaning machine has walked the second predetermined distance, the driving device is turned off and the second sensor is activated to sense the distance between the cleaning machine and the water surface; After the first sensor senses the predetermined distance between the cleaning machine and the water surface, restart the motor; or Restarting the motor after a predetermined time has elapsed for the motor to be off; and Repeat the above steps. 15. The pool cleaning vehicle of claim 14, wherein said vehicle includes a two-speed motor having a first speed and a faster second speed, and when the motor is restarted, it will One speed runs at a faster second speed. 16. The pool cleaning vehicle of claim 10, wherein the motor operates at the second, faster speed until the vehicle reaches a predetermined distance, and then the motor reverts to the first, slower speed. 17. The pool cleaning vehicle of any one of claims 1 to 14, wherein the vehicle releases air through the water outlet after the motor is turned off.

Images